September 2025 Calendar: Download Free Printable Templates, Holiday Highlights & Long-Weekend Planner

September 2025 brings the first whiff of autumn, a long-weekend kick-off, and a cluster of observances that make the month ideal for advance planning. Use the printable September 2025 calendar below—complete with U.S. federal holidays, global observances, and moon-phase data—to lock in vacation days, project milestones, and family events. Key dates at a glance • Labor Day (U.S.) – Monday, Sept 1, 2025 • Grandparents Day (U.S.) – Sunday, Sept 7 • Full Moon (Corn Moon) – Sunday, Sept 7, 2:09 p.m. UTC • Patriot Day & National Day of Service – Thursday, Sept 11 • Mid-Autumn Festival (Asia) – Tuesday, Sept 9 • International Day of Democracy – Monday, Sept 15 • Autumnal Equinox – Monday, Sept 22, 12:54 p.m. UTC • New Moon – Monday, Sept 22 • Rosh Hashanah 5786 – begins at sundown Monday, Sept 22, ends Wednesday night, Sept 24 • First Quarter Moon – Tuesday, Sept 30 Why September 2025 matters for planners 1. Perfect holiday stretch: With Labor Day landing on the 1st, a single vacation day on Tuesday the 2nd creates a four-day mini-break. 2. Early budgeting cycle: Corporations close Q3 books on September 30; locking deadlines now prevents quarter-end crunches. 3. Seasonal reset: The equinox on the 22nd signals shorter daylight hours—prime time to shift workout schedules or launch fall marketing campaigns. Printable calendar tips • Format: Letter-size (8.5″ × 11″) landscape PDF fits standard home printers. • Include week numbers (ISO-8601) for agile sprint planning: Week 36 starts Sept 1; Week 40 ends Sept 28. • Add personal trackers—hydration, study hours, habit streaks—in the left margin before printing. Regional notes Canada: Labour Day also falls on Sept 1; Truth and Reconciliation Day follows on Sept 30. UK: Schools in England and Wales resume the first week; consider traffic spikes around Sept 3-5. India: Ganesh Chaturthi is Friday, Sept 5—block calendar space for courier delays in Maharashtra-based supply chains. Astronomical highlights • Early-month stargazing: The Corn Moon rises just after sunset on the 7th—ideal for low-light photography. • Meteor watch: The minor ε-Perseid shower peaks Sept 9-10; jot a note on your calendar for midnight observing. How to download 1. Right-click the image or “Download PDF” button. 2. Select “Save link as…” to store the September 2025 calendar file locally. 3. Print at 100 % scale; choose “shrink oversized pages” if margins clip. Pro planning hack Combine the September 2025 calendar with an annual overview and a quarterly Gantt chart. Align Labor Day promotions, fiscal Q3 deadlines, and post-equinox product launches on one visual board to eliminate schedule collisions. Lock in your dates now—September 2025 is only a page flip away.